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Question

javac可以这样用
javac *.java 
javac a1.java a2.java你的把你的那些java文件像上面那样放到一起编译就可以了,可以加上文件目录的.

Answer 1

这样是编译出来了。 可在jsp中使用时 还是一样org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: 6 in the jsp file: /stock/SQLViewer_v2.jspGenerated servlet error:
    [javac] Compiling 1 source fileE:\Server\Apache\Tomcat\Tomcat 5.0\work\Catalina\localhost\_\org\apache\jsp\stock\SQLViewer_005fv2_jsp.java:8: package stock.common does not exist
import stock.common.*;
^
E:\Server\Apache\Tomcat\Tomcat 5.0\work\Catalina\localhost\_\org\apache\jsp\stock\SQLViewer_005fv2_jsp.java:50: package stock.common does not exist
      stock.common.ConnPool connPool = null;
                  ^An error occurred at line: 6 in the jsp file: /stock/SQLViewer_v2.jspGenerated servlet error:
E:\Server\Apache\Tomcat\Tomcat 5.0\work\Catalina\localhost\_\org\apache\jsp\stock\SQLViewer_005fv2_jsp.java:52: package stock.common does not exist
        connPool = (stock.common.ConnPool) _jspx_page_context.getAttribute("connPool", PageContext.APPLICATION_SCOPE);
                                ^An error occurred at line: 6 in the jsp file: /stock/SQLViewer_v2.jspGenerated servlet error:
E:\Server\Apache\Tomcat\Tomcat 5.0\work\Catalina\localhost\_\org\apache\jsp\stock\SQLViewer_005fv2_jsp.java:54: package stock.common does not exist
          connPool = new stock.common.ConnPool();
                                     ^An error occurred at line: 13 in the jsp file: /stock/SQLViewer_v2.jspGenerated servlet error:
E:\Server\Apache\Tomcat\Tomcat 5.0\work\Catalina\localhost\_\org\apache\jsp\stock\SQLViewer_005fv2_jsp.java:77: package stock.common does not exist
      stock.common.SQLBridge sqlBridge = null;
                  ^An error occurred at line: 13 in the jsp file: /stock/SQLViewer_v2.jspGenerated servlet error:
E:\Server\Apache\Tomcat\Tomcat 5.0\work\Catalina\localhost\_\org\apache\jsp\stock\SQLViewer_005fv2_jsp.java:79: package stock.common does not exist
        sqlBridge = (stock.common.SQLBridge) _jspx_page_context.getAttribute("sqlBridge", PageContext.PAGE_SCOPE);
                                 ^An error occurred at line: 13 in the jsp file: /stock/SQLViewer_v2.jspGenerated servlet error:
E:\Server\Apache\Tomcat\Tomcat 5.0\work\Catalina\localhost\_\org\apache\jsp\stock\SQLViewer_005fv2_jsp.java:81: package stock.common does not exist
          sqlBridge = new stock.common.SQLBridge();
                                      ^An error occurred at line: 17 in the jsp file: /stock/SQLViewer_v2.jspGenerated servlet error:
E:\Server\Apache\Tomcat\Tomcat 5.0\work\Catalina\localhost\_\org\apache\jsp\stock\SQLViewer_005fv2_jsp.java:97: cannot resolve symbol
symbol  : variable ISOtoBig5 
location: class org.apache.jsp.stock.SQLViewer_005fv2_jsp
    String sqlStatements=ISOtoBig5.convert( request.getParameter( "SQL-statements" ) ) ;
                         ^
8 errors
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:127)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:351)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:415)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:458)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:553)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:291)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)